221020002019 has 2 divisors, whose sum is σ = 221020002020. Its totient is φ = 221020002018.

The previous prime is 221020001999. The next prime is 221020002041. The reversal of 221020002019 is 910200020122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221020002019 - 2²³ = 221011613411 is a prime.

It is a super-2 number, since 2×221020002019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221020001987 and 221020002005.

It is not a weakly prime, because it can be changed into another prime (221020002059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510001009 + 110510001010.

It is an arithmetic number, because the mean of its divisors is an integer number (110510001010).

Almost surely, 2^221020002019 is an apocalyptic number.

221020002019 is a deficient number, since it is larger than the sum of its proper divisors (1).

221020002019 is an equidigital number, since it uses as much as digits as its factorization.

221020002019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 221020002019 in words is "two hundred twenty-one billion, twenty million, two thousand, nineteen".